Island



(No Model.)

A. R. SHERMAN. SPINDLE sUPPoRT P0P. sPINNlNGMAGHINEs.

No. 363,425. Patented May 24, 188?.

ATTORNEYS.

lUNITED STATES PATENT OFFICE.,

ALBERT B1. SHERMAN, OF PAWTUOKET, RHODE ISLAND, ASSIGNOR', BY MESNEASSIGNMENTS, TO THE SAWYER SPINDLE COMPANY, OF BOSTON, MASSA- CHUSETTS.

SPINDLE-SUPPORT FOR SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No.363,425, dated May 24,1887.

Application filed July 3, 1892. Serial No. 65,803. (No model.)

To all whom, it may concern:

Beit known that I, ALBERT R. SHERMAN, of Pawtucket, in the county ofProvidence and State of Rhode Island, have invented a new and ImprovedSpindle-Support for Spinning- Machines; and I do hereby declare that thefollowing is a full, clear, and exact description of the saine,reference being had to the accompanying drawings, forming part of thisspecixo iication, in which Figure 1 is a vertical section of thebolster, bolster-case, whirl, sleeve, and rail, the spindle being shownin side elevation; and Fig. 2 is a detail side view of the bolsterdetached.

The objectyof my invention is to provide an improved construction andarrangement of the spindle, bolster, and bolster-casein aspinningspindle which will allow the spindle, when in action, to findits own center of rotation when zo unequally loaded, and which willinsure easy ruiming with the least possible noise and highest speed.

To these ends my invention consists in the construction and arrangementof parts, which I will rst proceed to fully describe, and thenexplicitly indicate in the claims.

In the drawings, A represents the rail of the spinning-frame, whichcarries the spindles of the machine. B is the bolster-case of one of 5othe spindles, in which is suspended the bolster D, thatl forms a directbearing for and carries the spindle E, with attached sleeve G and whirlF. The bolster-case B has a seat that rests upon the top of the rail,and has a closed bottom or socket portion that projects d ownwardlythrough the rail, which forms the oilreservoir, and upon the exterior ofwhich socket portion is formed a screw-thread, upon which turns a nut,C, that clamps the bolster- .io case firmly to the rail. rIhe upper endof the bolster-case has an annular groove, c, the inner wall of whichgroove is lower than the outer one. oil that may rise from centrifugalaction, and

its inner wall being ofless height than its outer one it also actssomewhat after the manner of a funnel to facilitate pouring the oil'intothe case. From the seat of the bolster-case there rises a hook, d, whichextends over the top of This groove serves to catch any the whirl andprevents the spindle from being 5o pulled out by its frictional contactwith the bobbin when the latter is removed.

The bolster D, it will be seen, forms the direct bearing for thespindle. It is constructed in the form of a hollow socket with a ange orlip, a, at its upper end, which rests upon the inner wall of the topportion of the bolstercase, and by which flange the said bolster issuspended. The external portion of the bolster from the lip or iiange ato the point g bclow the whirl is a true cylinder, while from point f/to its lower end it preferably tapers to a smaller diameter, as shown.rIhe bolstcrD has also at its top a lug or tooth, e, that drops into anotch in the top of the bolster-case and positively restrains thebolster from turning in its case. Now in fitting the bolster to thebolster-case the external diameter of the cylindrical portion of thebolster between lip a and pointg is made somewhat smaller than thecorresponding inner periphery of the bolstercase, so that the bolster tsloosely in the bolster-case, and is capable of slight lateral movementthroughout its entire length as a whole.

The described bolster is detached from the bolster-case, by which I meanto signify that the bolster is not a fixture in the case-that is, isnota permanent immovable part of the case, but rather has enough playtherein to enable the bolster to have sufficient movement under thestrain of the spindle to compensate for and take up the jar due to rapidrotation and unequal loading of the spindle, the said bolster being,however, restrained from rotation in the case with the spindle by meansof a projection or pin, as herein described.

Then this bolster-case is lilled with oil, a lm of oil is distributedbetween the bolster and its case,that acts as a cushion to the slightlateral movement of the bolster throughout the whole length of the same,and effectnally prevents the vibratory contact and noise oceasioned bythe parts, and permits the spindle to be run at a much higher rate ofspeed.

Now I am aware of the fact that a iibrous lining has been placed betweenthe bolster and the case; but this rapidly wears away. I am also awarethat the bolstcrhas been suspended in the bolster-case by aclose-iitting ball-andsocket joint located in the plane of the whirl andalso by a square shoulder, which joints had a loose tting above andbelow, which permitted the spindle to vibrate about the point of supportas a center; but with this construction, if there is any variation inthelength of the sleeve G, the whirl might be above or below theclose-fitting joint, and the strain of the band passing around the whirlwould tend to pull the spindle out of its true axial position.Furthermore, this ball-and-socket joint, or any equivalent thereof,Iwhich forms a center of oscillation,involves a close iitting at thatpoint, which would preclude the free lateral movement of the bolster inits case through- .out its entire length.

The essential features of my invention,there fore, are the peripheralloose -fitting of the bolster in its case throughout the entire lengthof the bolster in connection with the closed bottom of the case, vwhichtogether forms an oilcushion between the bolster and its 'casethroughout the entire length of the bolster, and in connection with thisthe means for positively restraining the bolster from turir ing, andalso for supporting the bolster in its case, consisting of a shoulderthat may be either located above the whirl, as shown in the drawings, orbelow the whirl, as shown in another pending application tiled by meJanuary 25, 1882.

The cylindrical looseftting surface of the bolster with oil-cushionextending from a to g, it will be seen, extends asufiieient distanceupon both sides of the whirl to allow for slight variations in thelatter and still prevent the pull of 'the band from disturbing theproper aXial position of the spindle,which latter runs with a true,free, easy, and smooth movement.

The lower end of the bolster is provided with a hole, I), which permitsthe oil to pass through and lubricate the spindle. This end of thebolster, which is preferably tapered from the line g to asmallerdiameter at its bot-tom, has a larger annular oil-space between'it andthe bolster-case than the space above, and the oil in this not only actsas a cushion and assists in taking up the same movement as theoil-cushion in the space above line g, but this increased oil-space atthe lower end allows the end of the bolster and spindle to vibrate aboutthe suspending-lip a, and co operates with the lateral play of thebolster as a whole in permitting the spindle to find its own center ofrotation when the center of gravity, or, rather, the running center, ischanged by irregularity in bobbin.

Upon the inner periphery of the bolster I form a spiral groove, f, whichserves to effect a better distribution of the oil throughoutthebearing-surface of the spindle.

In regard to the feature of positively locking the bolster to thebolster-case, to prevent the former from turning, this I do not claim,broadly, but only said feature when combined with the bolstcr-case witha closed bottom,

chamber `of the bolster-case as the foot of the Y spindle wanders toseek its true center of rotation, the bolsterbeing restrained fromrotation in the bolster-case by means of the stop or lug e.

Having thus described my invention, what I claim as new isl. Thecombination, with the bolster-case having a closed bottom, of thebolster having a step for the spindle and fitted loosely in thebolstercase peripherally throughout its Whole length, whereby when saidcase is filled with oil an oil-cushion is 'formed between the interiorof the bolster-case and the exteriorl of the bolster throughout itslength, and the bolster is left free to vibrate as a whole against saidoilcushion laterally in all directions, substan'- tially as described,and for the purpose set forth.

2. The combination of a bolstcrcase having a closed bottom, a bolsterhaving a step for the spindle and iitted loosely within the bolstercasethroughout its length, forming a chamber between the two for oil andpermitting free lateral motion as a whole, and means for posi tivelyrestraining the bolster from turning, substantially as and for thepurpose described.

3. The combination of a sleeve-whirl spindle, a bolster-case having aclosed bottom, a bolster itted loosely within the bolster-casethroughout its entire length and forming an oil-chamber between the two,in which the bolster and spindle are capable of motion in a lat eraldirection as a whole, and means for posi tively restraining the bolsterfrom turning, substantially as and for the purpose described.

4. The combination, with the bolstercase having a closed bottom, of thebolster having a lip or iiange, ct, at its top for suspending it in thebolster-case,and ttin g loosely throughout its length in the case toform an oil-cush- 'ion chamber, substantially as and for thc purpose setforth.

5. A spindle, a supporting-tube closed at its bottom and having achamber to contain oil, and'a detached bolster placed in the chamber ofthe supporting-tube and moving with the spindle as its foot seeks itstrue center of rotation, combined with means to connect the tube andbolster and positively prevent the rotation of the bolster with thespindle, substantially as described.

The above specification of my invention signed by mein the presence oftwo subscrib ing witnesses.

l ALBERT R. SHERMAN. Vitnesses:

Enwn. W. Bran, SoLoN C. KEMON.

IOO

IlO

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